Perhaps you should try some spelling variations:
cang thang » cong thanh, dang thanh
tieu xanh » tieu danh, chieu xanh, dieu hanh
hang hang » nang hang, hung thang, lang thang
hang nong » thang long, han tong
nong tan » cong tan, nong dan, nong san
toan ban » van ban
va hang » van hang, va nang, va lang

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: theo tieu xanh - ((hang hang) or (cang thang)) va hang nong tan ((toan tap) OR (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu xanh - ((hang hang) OR (cang thang)) va hang nong tan ((toan tap) OR (toan ban)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo tieu xanh - ((hang hang) or (cang thang)) va hang nong tan ((toan tap) OR (toan ban))".
• Adding a wildcard symbol may retrieve word variants: theo tieu xanh - ((hang hang) or (cang thang)) va hang nong tan ((toan tap) OR (toan ban))*.